Simultaneous Nadir Overpasses (SNOs) between HIMAWARI-9 and NOAA-21
TLE Epoch: 2025 3 18.  Predictions up to the next  14.0 days:

     Date     Time(HIMAWARI-9)   HIMAWARI-9 Lat/Lon  NOAA-21 Lat/Lon    Distance(km)  Time Diff(sec)
 03/21/2025   04:04:18   (  -0.02, 140.78) (  -0.21, 139.92)   97.26                80
 03/22/2025   03:48:13   (  -0.01, 140.78) (   0.79, 144.46)  419.14                80
 03/23/2025   16:09:59   (   0.02, 140.77) (   0.38, 139.19)  180.33                80
 03/24/2025   15:48:34   (   0.02, 140.77) (  -0.63, 143.73)  336.26                80
 03/26/2025   04:10:29   (  -0.02, 140.78) (  -0.57, 138.43)  268.20                80
 03/27/2025   03:54:23   (  -0.02, 140.77) (   0.44, 142.96)  249.12                80
 03/28/2025   16:16:10   (   0.03, 140.75) (   0.72, 137.69)  348.68                80
 03/29/2025   15:54:44   (   0.02, 140.74) (  -0.30, 142.23)  168.80                80
 03/31/2025   04:16:39   (  -0.02, 140.74) (  -0.86, 136.92)  434.67                80
 04/01/2025   04:00:34   (  -0.02, 140.73) (   0.17, 141.45)   83.26                80